package lab_01;

import java.util.Scanner;

public class Test_05 {
    public static void main(String[] args) {
        double ran = Math.random();
        int i = (int)(ran * 5);
        switch (i){
            case 1:
                System.out.println("不及格");
                break;
            case 2:
                System.out.println("及格");
                break;
            case 3:
                System.out.println("中等");
                break;
            case 4:
                System.out.println("良好");
                break;
            case 5:
                System.out.println("优秀");
                break;
        }

    }

}
